Group Discussion is a procedure to test the candidates power of Verbal and Non-Verbal Communication. By Verbal Communication we mean "Oral Communication" whereas Non-Verbal Communication includes our "Body Language".
Example : Facial expressions, gestures, etc. This test is done inorder to determine candidate's personality trait and skills which is required in members for particlular tasks or study. Your attitude, aptitude, intelligence and knowledge about a particular topic, your group behaviour, ability of coordination, group cooperation and your convincing power - all form a part of your success in a Group Discussion.

In simple term, Group Discussion is nothing but a formal discussion that involves group of people consisting of 10 - 12 in numbers. These group of people are known as "Candidates". Candiates are given a "Topic or Situation" to think and discuss about among themselves for 15 - 20 minutes. Usually, the Supervisor gives a topic and monitors the performances of each candidate.
The most important ingredient in any Group Discussion is your "Knowledge". The topics are usually of general interest and importance but one should always be prepared. Be aware of happenings around you and the world. Keep yourself updated with the latest trends and happenings inorder to know the reactions and views of the experts.
How good are you at dealing and interacting with people? - This is a very important question. Logical Thinking and interpretation of the topic by any participating candidate is also considered one of the most important ingredient in any effective Group Discussion. A candidate should be able to define topic in clear terms.
Here are some tips for your successful part in Group Discussion :
1. Keep a notepad and pencil to take down points of other speakers.
2. Always be polite and never be aggressive while discussing topic. Do not use extreme phrases.
3. Be positive. Be yourself.
4. Behave in a friendly and dignified manner.
5. Don't be too loud or too low. Maintain your balanced tone.
6. Don't be fast. Be slow and clear. Whatever you speak, do it with conviction and confidence.
7. Explain each point in such a manner so that other candidates understand well and appreciate.
8. One should never try to mislead the group. If in doubt, seek clarification.
9. Don't make too many gestures.
10. Maintain your cool even if a candidate criticises your points.
11. Don't interrupt any speaker even if you don't agree with him or her on a certain point. Put your point forward only after he has finished.
12. Do listen to other participants arguments patiently and try to synthesize them with your arguments.
13. Do use eye contact to involve all participants in the group.
14. Don't extend personal remarks or examples.
15. Never try to force your viewpoint on the group.
16. Do not open the discussion unless you are well aware about the subject.
17. Never try to boss the group.
18. Try to look at everyone while you are talking and not just at one person.
19. Do not criticise.
20. Be confident.